摘要
以武汉武锅能源工程有限公司设计的二次风道为对象,运用数值模拟的方法考查了改造前后二次风道各出口空气的速度分布和质量流量分配情况。结果表明,通过布置弧形挡板,风道出口速度的均匀性显著提升,最大变异系数Cv由29%下降到9%,而且还避免了因风速不均引起的烧边现象。此外,改进后风道各出口空气的流量分配非常接近理想工况,与理想工况的偏差从9.9%缩小到2.1%。
Taking the secondary air duct designed by Wuhan Wuguo Energy Engineering Co.,Ltd.as the object,this paper used the numerical simulation method to investigate the velocity distribution and mass flow distribution of the outlet air of the secondary air duct before and after the transformation.The results show that by arranging the curved baffle,the uniformity of the exit velocity of the air duct is significantly improved,and the maximum Cv value is reduced from 29%to 9%,and the edge burning phenomenon caused by the uneven wind speed is also avoided.In addition,the air flow distribution at each outlet of the air duct after improvement is very close to the ideal condition,and the deviation from the ideal condition is reduced from 9.9%to 2.1%.
作者
祝鑫阳
黄立成
罗俊伟
王大伟
杨文海
ZHU Xinyang;HUANG Licheng;LUO Junwei;WANG Dawei;YANG Wenhai(Wuhan Wuguo Energy Engineering Co.,Ltd.,Wuhan 420223,Hubei,China)
出处
《能源与节能》
2020年第3期87-89,共3页
Energy and Energy Conservation
关键词
二次风道
数值模拟
弧形挡板
速度分布
流量分配
secondary air duct
numerical simulation
curved baffle
velocity distribution
flow distribution
作者简介
第一作者:祝鑫阳,1992年生,男,湖北武汉人,2017年毕业于华中科技大学热能工程专业,硕士,工程师。
